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Old 11-04-2009, 02:19 PM
evivbulgroz evivbulgroz is offline
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Join Date: Jun 2007
Location: France
Posts: 14

officially ,there is no way to install the nwz-s639s firmware on the nw-s639f.if the player is not recognized it's because they don't have the same usb device id (054c:038e for nwz-s639f and 054c:038d for nw-s639f).It may be possible to switch the ini files in the firmware installer but it is a potentially dangerous manipulation and i don't know what the result could be.

Last edited by evivbulgroz; 11-04-2009 at 07:33 PM.
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